invalid-server-options.mdx


title: It looks like the next instance is being instantiated incorrectly.

Why This Error Occurred

You have passed a null or undefined parameter to the next() call.

Possible Ways to Fix It

Make sure you are passing the variables properly:

const app = next()

And make sure you're passing dev as shown in the examples below:

const app = next({ dev: boolean })

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errors/invalid-server-options.mdx · vercel/next.js | Docs MD